Service lift
AssigneeDuallift GmbH
InventorFrank Lülfing
Life of this patent
Estimating the term…
Abstract
The invention concerns a service lift, in particular for installation in or on building structures, having a personnel access means, a drive device for upward and downward movement of the personnel access means, and a suspension means which can be fixedly connected to the building and along which the service lift is movable by the drive device. The suspension means has a first and preferably a second drive chain which can be mounted to a fixing point on the building structures, and the drive device has for the or each of the drive chains one or more cogwheels which are in force-transmitting engagement with the respective drive chain to convert a rotation of the cogwheels into the upward or downward movement of the service lift.
Claims21
A service lift, in particular for installation in or on building structures, comprising:
- a personnel access means;
- a drive device for upward and downward movement of the personnel access means, the drive device being fixed on the roof of the personnel access means by means of a mounting plate, the drive device having a motor drive having a first drive motor and a second drive motor, the first drive motor and the second drive motor being of an identical configuration, the drive device having a plurality of cogwheels, each of the cogwheels being of an identical configuration;
- and
- a suspension means which can be fixedly connected to the building structures and along which the service lift is movable by the drive device, wherein the suspension means has a first drive chain and a second drive chain, each of which can be mounted to a fixing point on the building structures, the first drive chain and the second drive chain being of an identical configuration,
- wherein one or more cogwheels of the drive device are in force-transmitting engagement with each of the first and second drive chains to convert a rotation of the cogwheels into the upward or downward movement of the service lift.
A service lift as defined in 1, further comprising a tension monitoring device which monitors the tension of the first and second drive chains.
Dependencies are inferred from the claim text.